Welcome to the Seattle Internet Exchange!

The SIX is a non-profit Internet Exchange Point in Seattle, Washington. We provide reliable and low-cost interconnection between member networks in the Northwest United States and beyond. Networks connect at speeds from 1 to Nx100 Gbps.

Quick Facts:

364 ASNs, 427 routers, 346 members
3 member-facing 400GbE ports
144 member-facing 100GbE ports
1 member-facing 40GbE port
263 member-facing 10GbE ports
29 member-facing GigE ports
2.83 Tbps of peak traffic
17+ terabits of connected member capacity

General Announcements

2023-01-18	SAVE THE DATE!: For the April 20th, 2023 Online Annual Member Meeting, please see this agenda and Calendar ICS.
2023-01-02	Updated port counts over time can be found here: csv png xls
2022-04-19	400GbE one-time port fee introduced on join page at $15,000 with availability at the Westin Building and KOMO Plaza.
2020-01-15	The route servers now perform additional strict filtering using RPKI.
2020-01-01	10GbE one-time port fee reduced from $2,000 to $1,500. 100GbE one-time port fee reduced from $10,000 to $7,500. No monthly fees.
2019-12-18	Port Fee Changes for 2020
2017-06-05	Jared Reimer's NANOG 70 presentation in honor of the 20th anniversary of the SIX.
2017-03-07	The route servers now perform strict filtering using Internet Routing Registry data.
2017-01-11	The route servers now support large BGP communities and prepend communities.
2017-01-01	10GbE one-time port fee reduced from $3,000 to $2,000. 100GbE one-time port fee reduced from $16,000 to $10,000 and optic now included.
2016-11-14	Blackholing support has been implemented on the core switches and route servers.
2016-09-30	Port Fee Changes for 2017
2016-08-26	New switches - Large Netflix donation - Fundraising
2016-05-09	IPv6 and frame size charts have been added to the 5-minute sampling aggregate traffic page. 1-minute sampling is now also available.
2016-01-01	The SIX is @seattleix on Twitter.
2015-06-04	The Euro-IX IXP Member List JSON Schema is now implemented.
2015-01-01	10GbE one-time port fee reduced from $5,000 to $3,000.
2014-09-30	100/40GbE port fees added to join page.
2014-07-23	"Speed" column added to participants page and CSV/TSV files. Thanks goes to PeeringDB.com for this data.
2014-07-22	Route servers are now available. Connect and enjoy!
2011-05-01	"Approx Prefixes" column added to participants page and CSV/TSV files. Thanks goes to PeeringDB.com for this data.
2010-06-21	A multi-year aggregate traffic graph has been added to the bottom of the aggregate traffic page.
2009-07-24	"General Policy" column added to participants page and CSV/TSV files. Thanks goes to PeeringDB.com for this data.
2009-07-17	Added text files containing daily average and maximum traffic levels. Updated daily.
2009-07-13	Added a Topology & Extensions page.
2009-04-03	This web site is now accessible via IPv6.
2008-12-14	The ASN entries on the participants page now link to their respective entry at PeeringDB.com. Please create and/or maintain your entry at PeeringDB.com.
2007-09-02	CSV and TSV file types are now available from the participants page.
2007-06-18	The aggregate traffic page is back up and the SIX is now compliant with the Packet Clearing House documentation BCP for exchange points.
2007-06-03	The participants page is now automatically generated. Columns may be sorted. Please report any problems to webmaster_a_t_seattleix.net.

Participant Updates

2023-03-04	Welcome OpenBSD (AS22512) at 2x1x10G via the Reliable Internet extension.
2023-03-03	Arrow Group Inc. (AS20119) has added 1x10G, bringing their capacity to a total of 2x1x10G at the Reliable Internet extension. They are connected to the route servers.
2023-03-02	Netskope (AS55256) has moved from an extension to a direct 100G. They are connected to the route servers.
2023-03-02	Welcome GVVME / Racknut (AS12186) at 10G via the NOCIX extension.
2023-02-27	Welcome HostingFuze Network (AS41732) at 1G via the NOCIX extension.
2023-02-16	LS Networks (AS25899) has added 1x10G bringing their capacity to a total of 4x10G. They have an Open peering policy.
2023-02-07	Anthem Broadband (AS32444) has upgraded to 100G. They are connected to the route servers.

2022-11-30	Arista 7280SR-48C6 switch at KOMO Plaza retired.
2022-10-11	One Arista 48-port 1/10G SFP+, 2-port 100G QSFP28 line card (7500R-48S2CQ) removed from, and one 36-port 100G QSFP28 line card (7500R-36CQ) installed into the Arista 7512R. Arista 7512R switch capacity now 288x 1/10G SFP+ and 192x 100G QSFP28.
2022-10-11	Two Arista 48-port 10G line cards (7500E-48S) removed from, and one 36-port 100G QSFP28 line card (7500R2-36CQ) installed into the Arista 7508R. Arista 7508R switch capacity now 192x 1/10G SFP+ and 108x 100G QSFP28.
2022-04-06	Arista 7504R3 with two 4-port 400G QSFP-DD, 48-port 1/10/25G SFP line cards (7500R3K-48Y4D), two 36-port 100G QSFP28 line cards (7500R3-36CQ), and two supervisors (DCS-7500-SUP2) powered on at KOMO Plaza.
2022-03-16	Arista 7808R3 with two 36-port 400G QSFP-DD line cards (7800R3-36D) and two supervisors (DCS-7800-SUP1A) powered on at the Westin Building.
2020-11-25	One Arista 48-port 1/10G SFP+, 2-port 100G QSFP28 line card (7500R-48S2CQ) installed into the Arista 7512R. Arista 7512R switch capacity now 336x 1/10G SFP+ and 158x 100G QSFP28.
2019-03-14	One Arista 36-port 100G QSFP28 line card (7500R-36CQ) installed into the Arista 7512R. Arista 7512R switch capacity now 288x 1/10G SFP+ and 156x 100G QSFP28.